1. Predicting Products of Reactions A Crash Course By Mrs. Volpe

2. First Step: identify the type There are 5 types of chemical reactions. 1. Synthesis 2. Decomposition 3. Combustion 4. Single Replacement 5. Double Replacement If you can identify which type of reaction you have based on the reactants given, then you can predict the products of that reaction.

3. Synthesis Reactions Reactants: Two elements Products: check your charges, and put the two elements together into one formula! Example: 2Ca + Cl -->2CaCl 2 +2 Criss-cross to get subscripts !

4. Decomposition Reactions Reactants: One compound Products: Break compound into elemental pieces. Check to see if you have diatomic elements! Example: 2KO --> 2K + O 2 Diatomic! Diatomics: H, N, O, F, Cl, Br, I

5. Combustion Reactions A combustion reaction is a specific sort of single replacement reaction that ALWAYS gives the same products: Reactants: Hydrocarbon and oxygen Products: Carbon dioxide and Water Example: C 3 H 8 + 5O 2 --> 3CO 2 + 4H 2 O

6. Single Replacement Reactants: One element and one compound Products: Determine the charges. Pair opposite charges to make a new molecule. Check to see if you have diatomic elements! Example: Zn + HCl ---> ZnCl 2 + H 2 +2 Criss-cross! Diatomic!

7. Double Replacement Reactants: Two compounds Products: Determine the charges. Pair opposite charges to make two new molecules. Example: Pb(NO 3 ) 2 + 2KI --> PbI 2 + 2KNO 3 +2 +1

8. Predict the products! 1. LiCl → 2. C 3 H 4 + O 2 → 3. Al + K 2 SO 4 → 4. NaCl + Ni(OH) 3 → 5. Rb + Br 2 → Li + Cl 2 CO 2 + H 2 O Al 2 ( SO 4 ) 3 + K NaOH + NiCl 3 RbBr